mlga91 :
If you want to game you need to upgrade both of them. Post your entire specs to see what you can reuse and post your budget for the upgrade.
I have a phenom II x2 555 black edition oc'd to 3.7ghz
A Galaxy geforce gt 630 oc'd to 830mhz
biostar mcp6p m2+ motherboard
300w psu don't know the brand
compaq case which is awful
4gb's of ram
budget of £200